Roof Water Cooling System

Heat is now transferred out of the building through the roof.

Roof water cooling system. The built in thermostat monitors the roof temperature constantly and activates mist when needed this helps keep your roof temperature normal and saves water as well. Roof sprinklers work by spraying water at predetermined intervals on a roof s surface. David s north carolina system. The cool mist created through the system keeps your roof cool and lowers the heat absorption.

A cool roof reflects the sun s energy reducing rooftop temperatures. They are simple and appear to be effective but would not be a good choice in areas where water is in short supply. Dark surfaces also contribute to the urban heat island effect. While a sunlight absorbing black roof can reach up to 190 f in the summer a reflective roof s temperature can be as much as 60 f lower.

An evaporative roof cooling system is designed to reduce the temperature of a roof from 165 f to about 90 f. John s nebraska system. At its lowest tech a roof misting system can be little more than a garden hose set to the mist setting and aimed across the roof. The water evaporates and cools the surface.

This cooling reverses the heat flow through the roof. John estimates that his systems saves about 5kwh per day on his cooling bill. The principle is similar to the way the human body cools itself with perspiration. One study indicates that water use is around 100 gallons per day per 1000 sqft of roof area.

These systems provide cooling by spraying water on the roof surface.